Cookeite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R061103 Zheng H, Bailey S W American Mineralogist 82 (1997) 1007-1013 Refinement of the cookeite "r" structure CELL PARAMETERS: 5.467048 9.066783 28.29473 90.00000 93.07607 90.00000 SPACE GROUP: Cc X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 6.28 100.00 14.1270 0 0 2 12.55 38.19 7.0635 0 0 4 18.86 96.56 4.7090 0 0 6 19.59 1.43 4.5334 0 2 0 19.10 26.71 4.6486 -1 1 1 18.99 19.17 4.6768 1 1 0 19.85 1.49 4.4761 0 2 1 19.73 33.83 4.5020 -1 1 2 19.39 51.82 4.5803 1 1 1 20.59 30.18 4.3166 0 2 2 20.82 13.09 4.2677 -1 1 3 20.28 28.10 4.3802 1 1 2 21.77 34.32 4.0848 0 2 3 22.32 1.62 3.9848 -1 1 4 21.61 25.59 4.1141 1 1 3 23.32 17.18 3.8152 0 2 4 24.14 8.73 3.6871 -1 1 5 23.30 15.70 3.8196 1 1 4 25.22 57.61 3.5317 0 0 8 25.19 19.30 3.5361 0 2 5 26.24 15.49 3.3973 -1 1 6 27.31 8.15 3.2659 0 2 6 28.54 7.41 3.1276 -1 1 7 29.64 4.29 3.0146 0 2 7 31.02 4.07 2.8829 -1 1 8 31.67 24.72 2.8254 0 0 10 32.13 6.70 2.7861 0 2 8 33.64 6.69 2.6638 -1 1 9 32.46 6.15 2.7581 1 1 8 33.90 1.85 2.6441 1 3 0 34.76 1.84 2.5809 0 2 9 32.81 18.74 2.7296 2 0 0 34.34 33.27 2.6113 -1 3 2 34.67 58.95 2.5868 1 3 2 36.38 3.04 2.4691 -1 1 10 34.58 29.62 2.5933 -2 0 4 33.78 2.40 2.6536 2 0 2 35.95 3.88 2.4977 -1 3 4 35.15 3.19 2.5528 1 1 9 36.59 2.00 2.4554 1 3 4 37.17 1.42 2.4185 -2 0 6 38.22 4.09 2.3545 0 0 12 39.23 2.42 2.2963 -1 1 11 35.90 42.70 2.5014 2 0 4 38.61 91.43 2.3315 -1 3 6 37.95 1.10 2.3706 1 1 10 40.35 1.09 2.2348 0 2 11 39.51 7.50 2.2804 1 3 6 40.67 3.20 2.2181 -2 0 8 42.16 1.70 2.1430 -1 1 12 39.01 1.25 2.3084 2 0 6 42.15 1.32 2.1435 -1 3 8 40.84 1.10 2.2089 1 1 11 43.29 2.23 2.0895 0 2 12 43.26 11.94 2.0907 1 3 8 44.90 6.37 2.0181 0 0 14 44.91 5.90 2.0180 -2 0 10 43.83 1.14 2.0652 1 1 12 45.51 1.75 1.9924 -2 2 8 42.94 20.53 2.1057 2 0 8 46.41 39.16 1.9561 -1 3 10 45.90 2.69 1.9764 0 4 7 44.01 1.53 2.0571 2 2 6 47.38 1.17 1.9181 -2 2 9 47.66 2.54 1.9076 0 4 8 45.71 2.53 1.9842 2 2 7 49.59 2.77 1.8377 0 4 9 47.60 1.57 1.9098 2 2 8 51.62 1.30 1.7701 -2 2 11 51.75 1.60 1.7659 0 0 16 51.68 1.17 1.7680 0 4 10 49.66 2.44 1.8354 2 2 9 53.96 2.20 1.6987 -2 2 12 52.70 11.04 1.7361 1 3 12 52.44 1.17 1.7442 -2 4 1 53.21 1.55 1.7209 1 5 0 52.45 1.32 1.7438 2 4 0 55.10 5.26 1.6661 -2 0 14 53.06 1.62 1.7253 -2 4 3 51.18 1.08 1.7841 3 1 0 52.20 1.06 1.7518 -3 1 4 51.87 1.50 1.7621 2 2 10 53.69 2.48 1.7067 -2 4 4 51.47 3.47 1.7747 3 1 1 54.52 2.07 1.6826 -2 4 5 51.98 1.65 1.7586 3 1 2 52.66 14.30 1.7374 2 0 12 53.97 1.19 1.6983 -3 1 6 56.44 1.32 1.6298 -2 2 13 56.63 28.12 1.6247 -1 3 14 55.54 2.23 1.6541 -1 5 5 55.12 1.88 1.6655 1 5 4 52.70 2.42 1.7363 3 1 3 56.61 1.64 1.6252 -1 5 6 54.23 1.33 1.6909 2 2 11 57.87 1.18 1.5928 -1 5 7 59.05 1.21 1.5638 -2 2 14 56.91 1.16 1.6173 2 4 6 58.20 13.76 1.5845 1 3 14 56.72 1.46 1.6223 2 2 12 60.91 6.08 1.5203 -2 0 16 59.81 1.52 1.5457 -3 1 10 61.78 2.23 1.5010 -2 2 15 60.19 1.06 1.5368 1 5 8 62.45 2.16 1.4864 -1 3 16 61.32 19.81 1.5111 0 6 0 59.31 39.86 1.5574 -3 3 2 59.97 2.26 1.5418 3 3 2 62.86 2.65 1.4777 0 6 4 64.63 1.84 1.4414 -2 2 16 61.79 3.00 1.5007 -3 3 6 64.27 2.42 1.4487 0 4 15 61.47 2.66 1.5078 3 3 4 64.76 2.41 1.4389 0 6 6 64.15 5.59 1.4512 1 3 16 64.15 2.88 1.4510 -3 3 8 66.11 2.67 1.4127 0 0 20 67.15 2.25 1.3934 -2 0 18 67.60 1.98 1.3851 -2 2 17 67.17 1.92 1.3930 0 4 16 63.71 2.70 1.4601 3 3 6 67.37 2.17 1.3893 0 6 8 64.96 1.18 1.4350 2 2 15 67.21 1.68 1.3923 -3 3 10 70.18 1.71 1.3403 0 4 17 67.94 1.31 1.3790 2 2 16 66.65 2.33 1.4026 3 3 8 70.66 1.90 1.3325 0 6 10 70.92 2.11 1.3283 -3 3 12 70.53 20.12 1.3346 1 3 18 73.82 10.40 1.2830 -2 0 20 71.30 3.69 1.3221 2 6 0 69.40 1.54 1.3536 -4 0 4 72.34 1.64 1.3056 -2 6 4 70.80 1.49 1.3302 2 0 18 71.86 2.26 1.3131 2 6 2 70.81 1.22 1.3301 -4 0 6 75.42 2.93 1.2597 -1 3 20 73.13 6.89 1.2934 2 6 4 72.92 4.09 1.2967 -4 0 8 75.42 1.07 1.2597 -1 7 1 75.52 1.45 1.2583 1 7 1 71.01 1.57 1.3268 4 0 4 76.19 2.75 1.2489 -2 6 8 75.83 1.31 1.2539 1 7 2 73.96 1.69 1.2810 3 5 1 75.10 1.28 1.2643 2 6 6 77.75 2.18 1.2277 2 6 8 81.76 2.58 1.1772 0 0 24 87.00 1.06 1.1193 -2 6 14 85.02 5.90 1.1402 2 6 12 88.01 2.99 1.1090 -4 0 16 88.01 2.99 1.1090 -4 0 16 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.